电流体动力对流对外部噪声的响应

Jong-Hoon Huh, Xiangwen Cui
{"title":"电流体动力对流对外部噪声的响应","authors":"Jong-Hoon Huh, Xiangwen Cui","doi":"10.1109/ICNF.2011.5994316","DOIUrl":null,"url":null,"abstract":"We report noise-induced threshold shifts in ac-driven electrohydrodynamic convection (EHC) in nematic liquid crystals. By changing the intensity V<inf>N</inf> and cutoff frequency ƒ<inf>c</inf> of noise, we investigate EHC-threshold shifts. There exists the characteristic cutoff frequency ƒ<inf>c</inf>* for the influence of noise on EHC. For cutoff frequencies ƒ<inf>c</inf> > ƒ<inf>c</inf>*, noise contributes to stabilizing the onset of EHC (i.e., it shifts the onset threshold upward), whereas for ƒ<inf>c</inf> &#60; ƒ<inf>c</inf>*, noise contributes to destabilizing the onset of EHC (i.e., it shifts the onset threshold downward). For ƒ<inf>c</inf> = ƒ<inf>c</inf>*, noise makes no contribution to the threshold shift (i.e., it is neutral with respect to the onset of EHC). However, the pattern structure of EHC is changed by V<inf>N</inf>, independent of ƒ<inf>c</inf>.","PeriodicalId":137085,"journal":{"name":"2011 21st International Conference on Noise and Fluctuations","volume":"591 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2011-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Response of electrohydrodynamic convection to external noise\",\"authors\":\"Jong-Hoon Huh, Xiangwen Cui\",\"doi\":\"10.1109/ICNF.2011.5994316\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"We report noise-induced threshold shifts in ac-driven electrohydrodynamic convection (EHC) in nematic liquid crystals. By changing the intensity V<inf>N</inf> and cutoff frequency ƒ<inf>c</inf> of noise, we investigate EHC-threshold shifts. There exists the characteristic cutoff frequency ƒ<inf>c</inf>* for the influence of noise on EHC. For cutoff frequencies ƒ<inf>c</inf> > ƒ<inf>c</inf>*, noise contributes to stabilizing the onset of EHC (i.e., it shifts the onset threshold upward), whereas for ƒ<inf>c</inf> &#60; ƒ<inf>c</inf>*, noise contributes to destabilizing the onset of EHC (i.e., it shifts the onset threshold downward). For ƒ<inf>c</inf> = ƒ<inf>c</inf>*, noise makes no contribution to the threshold shift (i.e., it is neutral with respect to the onset of EHC). However, the pattern structure of EHC is changed by V<inf>N</inf>, independent of ƒ<inf>c</inf>.\",\"PeriodicalId\":137085,\"journal\":{\"name\":\"2011 21st International Conference on Noise and Fluctuations\",\"volume\":\"591 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2011-06-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2011 21st International Conference on Noise and Fluctuations\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ICNF.2011.5994316\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2011 21st International Conference on Noise and Fluctuations","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICNF.2011.5994316","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

摘要

我们报道了向列液晶中交流驱动的电流体动力对流(EHC)中噪声引起的阈值偏移。通过改变噪声的强度VN和截止频率ƒc,我们研究了ehc阈值的偏移。噪声对EHC的影响存在特征截止频率ƒc*。对于截止频率ƒc > ƒc*,噪声有助于稳定EHC的发作(即,它将发作阈值向上移动),而对于ƒc <ƒc*,噪声有助于破坏EHC发病的稳定性(即,它使发病阈值向下移动)。对于ƒc = ƒc*,噪声对阈值移位没有贡献(即,它对EHC的发病是中性的)。然而,EHC的模式结构是由VN改变的,与ƒc无关。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Response of electrohydrodynamic convection to external noise
We report noise-induced threshold shifts in ac-driven electrohydrodynamic convection (EHC) in nematic liquid crystals. By changing the intensity VN and cutoff frequency ƒc of noise, we investigate EHC-threshold shifts. There exists the characteristic cutoff frequency ƒc* for the influence of noise on EHC. For cutoff frequencies ƒc > ƒc*, noise contributes to stabilizing the onset of EHC (i.e., it shifts the onset threshold upward), whereas for ƒc < ƒc*, noise contributes to destabilizing the onset of EHC (i.e., it shifts the onset threshold downward). For ƒc = ƒc*, noise makes no contribution to the threshold shift (i.e., it is neutral with respect to the onset of EHC). However, the pattern structure of EHC is changed by VN, independent of ƒc.
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信